Kris Kross: Reuniting For 20th Anniversary Concert!

Break out the backwards oversized jeans and sports apparel.

Pint-sized rap duo Kris Kross, now adults, are ready to jump back into the spotlight for a 20th anniversary show, two decades after their breakout success.

Or should we say jump, jump, jump back in! Warm it up, Kris!

Kris Kross - Warm It Up

It's been 20 years since Chris "Mac Daddy" Kelly and Chris "Daddy Mac" Smith released "Jump" and "Warm It Up" (above) and, well, they've aged a bit.

When you see them next month reuniting for 20th anniversary all-star concert honoring So So Def Recordings in Atlanta next month, you won't even recognize them.

Well, save for their clothes being on backwards.

Here's Chris and Chris then and now!